From 287b4f66113d97eb8c68c677dce90f49f306200e Mon Sep 17 00:00:00 2001
From: Berkus Decker <berkus+github@metta.systems>
Date: Mon, 29 Oct 2018 10:42:59 +0200
Subject: [PATCH] Add license header converter

---
 apply_boilerplate.rb    | 90 +++++++++++++++++++++++++++++++++++++++++
 license_header          | 22 ++++++++++
 original_license_header | 20 +++++++++
 3 files changed, 132 insertions(+)
 create mode 100755 apply_boilerplate.rb
 create mode 100644 license_header
 create mode 100644 original_license_header

diff --git a/apply_boilerplate.rb b/apply_boilerplate.rb
new file mode 100755
index 000000000..cb083dd27
--- /dev/null
+++ b/apply_boilerplate.rb
@@ -0,0 +1,90 @@
+#!/usr/bin/env ruby
+#
+# Part of Metta OS. Check https://metta.systems for latest version.
+#
+# Copyright Stanislav Karchebnyy <berkus+github@metta.systems>
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt)
+#
+# Apply license changes to text source files.
+# Run as ./apply_boilerplate.rb
+#
+require 'find'
+
+exclude_dirs = ['./_build_', './_conan_build_', './Telegram/ThirdParty']
+# Files that shouldn't update license headers
+no_license = [
+    './apply_boilerplate.rb',
+    './Telegram/Resources/winrc/resource.h',
+    './Telegram/SourceFiles/qt_functions.cpp',
+    './Telegram/SourceFiles/backports/is_invocable.h',
+    './Telegram/SourceFiles/boxes/mute_settings_box.h',
+    './Telegram/SourceFiles/boxes/mute_settings_box.cpp'
+]
+
+class Array
+    def do_not_has?(path)
+        count {|x| path.start_with?(x)} === 0
+    end
+end
+
+license = IO.readlines('license_header').join
+orig_license = IO.readlines('original_license_header').join
+exts = {
+    '.cpp'=>[license, orig_license],
+    '.c'=>[license, orig_license],
+    '.h'=>[license, orig_license],
+    '.m'=>[license, orig_license],
+    '.mm'=>[license, orig_license],
+    '.strings'=>[license, orig_license],
+    '.s'=>[license.gsub(/^\/\//,";"), orig_license],
+    '.rb'=>[license.gsub(/^\/\//,"#"), orig_license],
+    '.lua'=>[license.gsub(/^\/\//,"--"), orig_license],
+    '.if'=>[license.gsub(/^\/\//,"#"), orig_license]
+}
+
+ok_count = 0
+modified_count = 0
+modified_files = []
+
+Find.find('./') do |f|
+    ext = File.extname(f)
+    dir = File.dirname(f)
+    if File.file?(f) && exts.include?(ext) && exclude_dirs.do_not_has?(dir)
+        lic = exts[ext][0]
+        orig = exts[ext][1]
+        modified = false
+        content = IO.readlines(f).join
+        if !content.index(orig).nil?
+            # Strip-off original license header
+            content.gsub!(orig, '')
+        end
+        if content.index(lic).nil? && no_license.do_not_has?(dir) && no_license.do_not_has?(f)
+            content = lic + content
+            modified = true
+        end
+        if modified
+            File.open(f+".new", "w") do |out|
+                out.write content
+            end
+            begin
+                File.rename(f+".new", f)
+            rescue SystemCallError
+                puts "Couldn't rename file #{f+".new"} to #{f}:", $!
+            end
+            puts "#{f} is UPDATED"
+            modified_count += 1
+            modified_files << f
+        else
+            puts "#{f} is ok"
+            ok_count += 1
+        end
+    end
+end
+
+puts "#{modified_count} files changed, #{ok_count} files ok."
+unless modified_files.empty?
+    puts "Modified files:"
+    modified_files.each { |f| puts f }
+end
diff --git a/license_header b/license_header
new file mode 100644
index 000000000..d40139780
--- /dev/null
+++ b/license_header
@@ -0,0 +1,22 @@
+//
+// This file is part of Kepka,
+// an unofficial desktop version of Telegram messaging app,
+// see https://github.com/procxx/kepka
+//
+// Kepka is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// It is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// In addition, as a special exception, the copyright holders give permission
+// to link the code of portions of this program with the OpenSSL library.
+//
+// Full license: https://github.com/procxx/kepka/blob/master/LICENSE
+// Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+// Copyright (c) 2017- Kepka Contributors, https://github.com/procxx
+//
diff --git a/original_license_header b/original_license_header
new file mode 100644
index 000000000..2aa4f28bf
--- /dev/null
+++ b/original_license_header
@@ -0,0 +1,20 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/